锌
阳极
材料科学
电池(电)
剥离(纤维)
电偶阳极
金属
枝晶(数学)
电极
储能
电镀(地质)
铜
镀铜
冶金
电镀
制作
电流密度
法拉第效率
阴极保护
复合材料
化学
功率(物理)
物理化学
几何学
地质学
物理
量子力学
数学
地球物理学
作者
Shouichi Higashi,Seok Woo Lee,Jang Soo Lee,Kensuke Takechi,Yi Cui
摘要
Portable power sources and grid-scale storage both require batteries combining high energy density and low cost. Zinc metal battery systems are attractive due to the low cost of zinc and its high charge-storage capacity. However, under repeated plating and stripping, zinc metal anodes undergo a well-known problem, zinc dendrite formation, causing internal shorting. Here we show a backside-plating configuration that enables long-term cycling of zinc metal batteries without shorting. We demonstrate 800 stable cycles of nickel-zinc batteries with good power rate (20 mA cm(-2), 20 C rate for our anodes). Such a backside-plating method can be applied to not only zinc metal systems but also other metal-based electrodes suffering from internal short circuits.
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